UPDATE...
I’ve added rcs thrusters and all the other bits that go on the back of the engine.
I’d say the detail of the back of the engine is done.
Here is the fin-thingy things in the front of the ship. So far I like the way these have turned out.
This version of the fins isn’t finishes because I’m not sure about it yet. I like the first version better.
Well I think I’ve decided on a scale for this ship and it comes in at around 230 meters long.